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L4957AD3.3 Datasheet(PDF) 2 Page - STMicroelectronics

Part # L4957AD3.3
Description  UP TO 5A ULDO LINEAR REGULATOR
PDF  7 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4957AD3.3 Datasheet(HTML) 2 Page - STMicroelectronics

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ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VIN
Supply Input Voltage
16
V
Ti
Junction Temperature
-40 to +150
°C
Tstg
Storage Temperature
-40 to +150
°C
PINS CONNECTION
IN
PRE
REGULATOR
VREF
+
-
E/A
OUT
GND
D00IN1108A
1
2
3
VIN
10
µF
CURRENT
LIMIT
THERMAL
SHUTDOWN
BUFFER
CHARGE
PUMP
POWER
DMOS
200m
Ω
22
µF
VOUT
RY
RX
BLOCK DIAGRAM
OUT
GND
IN
1
3
D98IN838B
2
Versawatt (TO220)
OUT
GND
IN
1
3
D98IN933A
2
D2PAK
PIN FUNCTIONS
Pin N
° Name
Function
1
IN
Unregulated input voltage; this pin must be bypassed with a capacitor larger than 10
µF.
2
GND
To connect to Ground to get 1.5V, 1.8V, 2.5V or 3.3V output.
3
OUT
Regulated output voltage. A minimum bypass capacitor of 22
µF is required to insure stability.
L4957A
2/7



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